Giza pyramid complex
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The Giza Necropolis stands on the Giza Plateau, on the outskirts of Cairo, Egypt. This complex of ancient monuments includes the three pyramids known as the Great Pyramids, along with the massive sculpture known as the Great Sphinx. It is located some 8 km (5 mi) inland into the desert from the old town of Giza on the Nile, some 25 km (15 mi) southwest of Cairo city centre. One of the monuments, the Great Pyramid of Giza, is the only remaining monument of the Seven Wonders of the Ancient World.
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Description
The Great Pyramids consist of the Great Pyramid of Giza (known as the Great Pyramid and the Pyramid of Cheops), the somewhat smaller Pyramid of Khafre (or Chephren) a few hundred meters to the south-west, and the relatively modest-sized Pyramid of Menkaure (or Mykerinos) a few hundred meters further south-west. The Great Sphinx lies on the east side of the complex, facing east. Current consensus among Egyptologists is that the head of the Great Sphinx is that of Khafre. Along with these major monuments are a number of smaller satellite edifices, known as "queens" pyramids, causeways and valley pyramids. Also associated with these royal monuments are the tombs of high officials and much later burials and monuments (from the New Kingdom onwards), signifying the reverence to those buried in the necropolis.
Of the four major monuments, only Menkaure's Pyramid is seen today without any of its original polished limestone casing, with Khafre's Pyramid retaining a prominent display of casing stones at its apex, while Khufu's Pyramid maintains a more limited collection at its base. Khafre's Pyramid appears larger than the adjacent Khufu Pyramid by virtue of its more elevated location, and the steeper angle of inclination of its construction – it is, in fact, smaller in both height and volume. The most active phase of construction here was in the 25th century BC. It was popularised in Hellenistic times when the Great Pyramid was listed by Antipater of Sidon as one of the Seven Wonders of the World. Today it is the only one of the ancient Wonders still in existence.
Due largely to 19th-century images, the pyramids of Giza are generally thought of by foreigners as lying in a remote, desert location, even though they are located in what is now part of the most populous city in Africa [1] (http://www.delange.org/Giza_Pyramids_Sphinx/GC.jpg). In fact, urban development reaches right up to the perimeter of the antiquities site. The ancient sites in the Memphis area, including those at Giza, together with those at Saqqara, Dahshur, Abu Ruwaysh, and Abusir, were collectively declared a World Heritage Site in 1979 [2] (http://whc.unesco.org/en/list/86).
![[1]](http://www.delange.org/Giza_Pyramids_Sphinx/GC.jpg){kind=link}
The Giza pyramids have been recorded in the Giza Plateau Mapping Project run by Ancient Egypt Research Associates, directed by Dr. Mark Lehner. In addition, Lehner's team undertook radiocarbon dating on material recovered from the exterior of the Great Pyramid.
Construction
Researchers have long been impressed with the precision with which the pyramids of this complex were created. The base of the Great Pyramid forms a nearly perfect square, with only a 19-cm (about 7.50-in) difference between its longest and shortest sides, out of a total length of about 230 m (756 ft). This huge square is also almost exactly level. When newly completed, the Great Pyramid rose 146.7 m (481.4 ft)—nearly 50 stories high. The pyramid’s core probably includes a hill of unexcavated rubble, making it impossible to determine its exact number of blocks. Researchers estimate that 2.3 million blocks were used to build the Great Pyramid, with an average weight of about 2.5 metric tons per block. The largest block weighs as much as 15 metric tons.
There have been varying theories regarding the construction techniques. Most construction theories are based on the idea that the pyramids were built by moving huge stones from a quarry and dragging and lifting them into place. The disagreements center on the method by which the stones were conveyed and placed. A recent theory proposes that the building blocks were manufactured in-place from a kind of "limestone concrete".
The work of quarrying, moving, setting, and sculpting the huge amount of stone used to build the pyramids was most likely accomplished by several thousand skilled workers, unskilled laborers and supporting workers—bakers, carpenters, water carriers, and others—were also needed for the project, so that, for instance a total of as many as 35,000 men and women were involved in the Great Pyramid. Many archaeologists and engineers now believe that the pyramid builders were not slaves, as was previously thought, but paid laborers who took great pride in their task. Most were probably farmers, contracted to work for a limited period. Specialists, who were permanently employed by the king, filled the positions that required the most skill—architects, masons, metalworkers, and carpenters.
In building the pyramids, the architects developed their techniques over time. They would select a site on a relatively flat area of bedrock—not sand—which provided a stable foundation. After carefully surveying the site and laying down the first level of stones, they constructed the pyramids in horizontal levels, one on top of the other.
For the Great Pyramid, most of the stone for the interior was quarried immediately to the south of the construction site. The smooth exterior of the pyramid was made of a fine grade of white limestone that was quarried across the Nile. These exterior blocks had to be carefully cut, transported by river barge to Giza, and dragged up ramps to the construction site. Only a few exterior blocks remain in place at the bottom of the Great Pyramid. During the Middle Ages (5th century to 15th century) people took the rest away for building projects in the city of Cairo.
To ensure that the pyramid remained symmetrical, the exterior casing stones all had to be equal in height and width. Workers marked all the blocks to indicate the angle of the pyramid wall and trimmed the surfaces carefully so that the blocks fit together. During construction the outer surface of the stone was left unfinished; excess stone was removed later.
Astronomy
The sides of all three of the Giza pyramids were astronomically oriented to be north-south and east-west within a small fraction of a degree. Among recent attempts to explain such a clearly deliberate pattern are those of S. Haack, O. Neugebauer, K. Spence, D. Rawlins, K. Pickering, and J. Belmonte. The arrangement of the pyramids is a disputed representation of the Orion constellation in the Orion Correlation Theory.
See also
PyramidsofGiza_at_night.jpg
- Christopher Dunn (author)
- Egyptian pyramids
- List of Egypt-related topics
- List of Egyptian pyramids
- List of megalithic sites includes section on calculating weight of megaliths
- List of archaeoastronomical sites sorted by country
- Joseph P. Farrell